Nissan Motor Company Limited

The University of Tokyo

Advanced Softmaterials Inc.

Asm Inc.

Kentarou Watanabe

Masahiko Yamanaka

Tatsuya Suzuki

Jun Araki

Kohzo Ito

Hiroshi Yokoyama

Hideaki Yaegashi

Shoko Kano

Takeshi Yamamoto

Yuki Hayashi

Hideo Sawada

Masaaki Kubo

Changming Zhao

Shin Hashimoto

Katsuhiko Sando

Yuki Amamoto

Tetsurou Kikugawa

Ryusei Matsuoka

Tetsurou Kigugawa

A drive apparatus for a vehicle auxiliary device is provided that basically includes first and second drive sources, an auxiliary device, first, second and third rollers, first, second and third idler rollers and a roller pair selection mechanism. The first, second and third rollers are linked to rotary shafts of the first and second drive sources and the auxiliary device. The first, second and third idler rollers are disposed at gap positions formed between the first, second and third rollers. The roller pair selection mechanisms select a power-transmitting roller pair from among the first, second and third rollers by selectively moving the first, second and third idler rollers in roller contact directions, thereby interposing the first, second and third idler rollers therebetween.

Drive device for vehicle auxiliary machine

There is provided a microparticle/polyrotaxane-containing coating with high abrasion resistance and chemical resistance. There are also provided a microparticle/polyrotaxane-containing coating film and a coated article. The microparticle/polyrotaxane-containing coating includes a solvent-based coating material, a modified polyrotaxane having a caprolactone modification group (&#x2014;CO(CH)OH) and microparticles having an average particle size of smaller than 380 nm. The microparticle/polyrotaxane-containing coating film is in the form of a layer of the microparticle/polyrotaxane-containing coating on an article to be coated. The coated article includes the microparticle/polyrotaxane-containing coating film and an article to be coated.

Microparticle/polyrotaxane&#x2014;containing coating, microparticle/polyrotaxane&#x2014;containing coating film and coated article

A nanoparticle includes a chain oligomer section having a hydrophilic group and fluoroalkyl groups respectively at its opposite terminals, a three-dimensional silica network section, and an organic chain having fluorine or silicon, and is represented by the following formula (2): where R' is independent H or independent alkyl group; X is the hydrophilic group and is selected from the group consisting of an OH group, an NCO group, an NHgroup, an NHR group (where R is alkyl group) and a COY group (where Y is a hydrophilic group); Ris the fluoroalkyl group having a carbon number of 2 to 10 and a molecular weight of 119 to 1000; 3D-SN is the three-dimensional silica network section; B is selected from the group consisting of an O, O&#x2550;C&#x2014;O, NH&#x2014;C&#x2550;O and NR&#x2014;C&#x2550;O (where R is alkyl group); E is O, O&#x2550;C&#x2014;O, NH&#x2014;C&#x2550;O or NR&#x2014;C&#x2550;O (where R is alkyl group); L is (CHO)&#x2014;[Si(CH)O]&#x2014;(CHO)-&#x3b1;, (CF)j-&#x3b1; or (CFO)-&#x3b1; where &#x3b1; is COY group (where Y is hydrophilic group), NCO group, NHgroup, NHR group (R is alkyl group), R group (or alkyl group) or H; n is 1&#x2266;n&#x2266;10; m is 1&#x2266;m&#x2266;n; k is 1&#x2266;k&#x2266;500; l is 0&#x2266;1&#x2266;10; j is 0&#x2266;j&#x2266;20; and h is 1&#x2266;h&#x2266;20.

Nanoparticle and nanoparticle composite

To provide a coating material for a room temperature curable solvent-borne overcoating material having chipping resistance and not allowing occurrence of cracks, and a room temperature curable solvent-borne overcoating material using the same, the room temperature curable solvent-borne overcoating material being excellent in abrasion resistance and in performance such as weather resistance, contamination resistance and adhesion. A coating material is formed of a lipophilic polyrotaxane including a cyclic molecule, a linear molecule piercing through the cyclic molecule to include it, and blocking groups disposed at both end terminals of the linear molecule to prevent departure of the cyclic molecule. In the lipophilic polyrotaxane, at least one of the linear molecule and the cyclic molecule has a hydrophobic modification group. A room temperature curable solvent-borne overcoating material is formed to contain the coating material preferably within a range of from 60 to 100% by mass relative to a film-forming component.

Material for room temperature curable solvent-borne overcoating material,coating material using same and coating film

To provide a hydrophobic modified polyrotaxane soluble in an organic solvent, and a crosslinked polyrotaxane using this. A hydrophobic modified polyrotaxane has a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups which are placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule. The cyclic molecule is cyclodextrin, and each of all or a part of the hydroxyl groups in the cyclodextrin is modified with a hydrophobic modification group. A crosslinked polyrotaxane is formed by combining this hydrophobic modified polyrotaxane and a polymer through the cyclic molecule.

Hydrophobic modified polyrotaxane and crosslinked polyrotaxane

A nanoparticle composite includes a host molecule including a chain oligomer section having a hydrophilic group and fluoroalkyl groups respectively at opposite terminals thereof and a three-dimensional silica network section, and having a structure represented by the following formula (1): where X is the hydrophilic group and is independent OH group, independent NCO group, independent NHgroup, independent NHR group (where R is alkyl group) or independent OCY group (where Y is a hydrophilic group); Ris the fluoroalkyl group having a carbon number of 2 to 10 and a molecular weight of 119 to 1000; 3D-SN is the three-dimensional silica network section; B is independent O, independent O&#x2550;C&#x2014;O, independent NH&#x2014;C&#x2550;O or independent NR&#x2014;C&#x2550;O (where R is alkyl group); n is 1&#x2266;n&#x2266;10; and m is 1&#x2266;m&#x2266;n; and a guest molecule included in the host molecule.

Nanoparticle composite

To provide a hydrophobic linear polyrotaxane molecule which is soluble in an organic solvent, and a crosslinked polyrotaxane using the same. A hydrophobic linear polyrotaxane molecule has a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule. The linear molecule is hydrophobic. The linear molecule is polycaprolactone and has a molecular weight ranging from 5,000 to 100,000. The cyclic molecule is &#x3b1;-cyclodextrin, &#x3b2;-cyclodextrin or &#x3b3;-cyclodextrin. A crosslinked polyrotaxane is formed by combining the hydrophobic linear polyrotaxane molecule and a polymer through the cyclic molecule.

Hydrophobic linear polyrotaxane molecule and crosslinked polyrotaxane

To provide a coating material for a curable solvent-based topcoating material, having excellent marring resistance, chipping resistance, producing no crack and excellent in performances such as weatherability, stain resistance, adhesion and the like, and a curable solvent-type topcoating material using such a material. A coating material is blended preferably in an amount of 60 to 90% by mass relative to paint film forming components thereby to form a curable solvent-based topcoating material. The coating material includes an oleophilic polyrotaxane which includes a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups which are placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule, at least one of the above-mentioned liner molecule and the cyclic molecule having hydrophobic modification group.

Material or curable solvent-based topcoating material, and coating material and coating film comprising or formed from the same

A nanoparticle includes a chain oligomer section having a hydrophilic group and fluoroalkyl groups respectively at its opposite terminals, a three-dimensional silica network section, and an organic chain having fluorine or silicon, and is represented by the following formula (1): where R' is independent H or independent alkyl group; X is the hydrophilic group and is independent OH group, independent NCO group, independent NHgroup or the like; Ris the fluoroalkyl group having a carbon number of 2 to 10 and a molecular weight of 119 to 1000; 3D-SN is the three-dimensional silica network section; B is independent O, independent O&#x2550;C&#x2014;O or the like; E is O, O&#x2550;C&#x2014;O, NH&#x2014;C&#x2550;O or the like; G is [(CHO)&#x2014;[Si(CH)O]&#x2014;(CHO)] or the like.

A coating material is blended preferably in an amount of 60 to 90% by mass relative to paint film forming components thereby to form a curable solvent-based topcoating material. The coating material includes an oleophilic polyrotaxane which includes a cyclic molecule, a linear molecule including the cyclic molecule with piercing through the cyclic molecule, and blocking groups which are placed at both end terminals of the linear molecule to prevent the cyclic molecule from leaving from the linear molecule, at least one of the above-mentioned liner molecule and the cyclic molecule having hydrophobic modification group.

Growing community of inventors

Atsugi, Japan

Kentarou Watanabe